Testosterone

A recent study provides evidence that administering opposite-sex hormones to rats shifts their sexual behavior to resemble the opposite sex. The findings suggest that these hormonal changes also suppress natural reproductive functioning.

Before physical signs of puberty appear, invisible hormonal shifts may trigger emotional distress in young girls. A new study finds that increasing testosterone between ages 10 and 12 predicts a higher risk for anxiety and depression.

A new study shows that a quick boost of testosterone does not make men abandon logical reasoning in favor of gut instincts. Surprisingly, the hormone might actually lower their confidence in their own cognitive abilities.

New research provides evidence that measuring testosterone is not a reliable way to assess sexual difficulties in midlife women. Scientists discovered that while hormones subtly influence physical arousal and orgasm, they share no actual link with sexual desire.

A new survey suggests that transgender youth taking gender-affirming testosterone experience lower rates of pelvic pain than those not taking hormones, challenging previous assumptions about the side effects of transitional care.

For decades, testosterone has been blamed for reckless behavior and risky financial gambles. However, a massive new meta-analysis of over 17,000 participants reveals that the link between the "macho" hormone and risk-taking is essentially zero.

New research reveals that adolescent boys hospitalized with major depression have much higher testosterone levels if they experience suicidal thoughts. The findings point toward potential biological markers that could help doctors identify young men at risk of self-harm.

A new genetic study suggests that the biological roots of depression and testosterone regulation are intertwined. Researchers found that specific genomic variances influence both hormone levels and the risk of developing major depressive disorder.

A study of Indigenous Shuar males shows that typical hormone patterns differ across environments. These findings suggest that Western medical benchmarks for male health may not reflect the biological reality for many people globally.

Viral “T maxxing” videos urge young men to boost testosterone. Here is why taking hormones without a medical need carries serious health risks.

A new experiment reveals that male hormone levels influence the decision to punish social injustice. The findings suggest that testosterone helps regulate behavior based on the physical attractiveness of the victim.

Parenting children is linked to lower testosterone in men. New research shows these hormonal shifts continue past the toddler years but remain within a healthy range.

A study in Evolution and Human Behavior reports that men with higher testosterone levels have body odor perceived as more dominant, providing evidence that humans respond to chemical signals regarding social rank.

New research finds that the hormone testosterone alters the mental calculations men use to learn from negative outcomes, enhancing self-protection with indirect consequences for their decisions involving others.

In the largest study of its kind, scientists found testosterone does not influence men's economic behavior. A dose of the hormone failed to change how men approached choices involving risk, fairness, and competition.